S
M
T
W
T
F
S
31
76°
45°
1
77°
49°
2
77°
52°
3
83°
56°
4
88°
60°
5
93°
66°
6
92°
66°
7
86°
60°
8
75°
57°
9
77°
59°
10
84°
66°
11
84°
66°
12
83°
65°
13
85°
65°
14
86°
66°
15
84°
61°
16
76°
57°
17
76°
57°
18
78°
58°
19
78°
59°
20
81°
61°
21
80°
64°
22
79°
63°
23
79°
66°
24
80°
65°
25
80°
60°
26
81°
63°
27
86°
67°
28
85°
66°
29
81°
62°
30
80°
61°
1
80°
61°
2
81°
63°
3
84°
67°
4
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grantham
Grantham's June 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 52° and 68°. The average high for June is 82° with an average low of 62°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Grantham. See also: July | August | September.
